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Standard VIII

Mathematics

Direct Proportion

Radhika is on...

Question

Radhika is on a road trip. She travels at an average rate of $50$ miles per hour. How far does she travel in $2 \frac{1}{2}$ hours?

50

miles

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100

miles

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125

miles

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150

miles

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Solution

The correct option is C $125$ miles
Average speed of Radhika $= 50$ miles per hour
$\Rightarrow$ Radhika travels $50$ miles in an hour

$∴$ Distance travelled by her in $2 \frac{1}{2}$ hours $= 50 \times \frac{5}{2} = 125$ miles

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Radhika is on a road trip. She travels at an average rate of 50 miles per hour. How far does she travel in 212 hours?

The correct option is C 125 milesAverage speed of Radhika =50 miles per hour⇒ Radhika travels 50 miles in an hour∴ Distance travelled by her in 212 hours =50×52=125 miles

Radhika is on a road trip. She travels at an average rate of $50$ miles per hour. How far does she travel in $2 \frac{1}{2}$ hours?

The correct option is C $125$ miles
Average speed of Radhika $= 50$ miles per hour
$\Rightarrow$ Radhika travels $50$ miles in an hour

$∴$ Distance travelled by her in $2 \frac{1}{2}$ hours $= 50 \times \frac{5}{2} = 125$ miles